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Hysteresis compensation for a digitizer tablet

  • US 5,229,551 A
  • Filed: 11/04/1991
  • Issued: 07/20/1993
  • Est. Priority Date: 11/04/1991
  • Status: Expired due to Fees
First Claim
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1. In a digitizer tablet having a pointing device, a method for determining and reporting the X-Y coordinates of the pointing device, relative to the tablet, corrected for pointing device movements, comprising the steps:

  • (a) determining but not reporting the coordinate positions of the pointing device along a first coordinate axis during successive time points,(b) using the determined coordinate positions of step (a), based on the pointing device'"'"'s velocity and acceleration determined from said use, calculating the coordinate position along said first coordinate axis that the pointing device would assume at a future time point,(c) reporting the coordinate position calculated in step (b).

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